Woven wick



June 22 ,1926.

1,589,490 F. W. SPANGLER VVVVVVVV CK Patented June 22, 1926.

UNITED STATES PATENT OFFICE.

FREDERICK W. SPANGLER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE MANTLE LAMPCOMPANY OF AMERICA, OF CHICAGO, ILLINOIS, A CORPORATION.

WOVEN WICK.

Application filed .Tune 30, 1924. Serial No. 723,295.

The invention relates to the construction of wicks which are, preferablyof the woven variety, and it concerns the arrangements of theconstituent elements thereof.

The novelty disclosed is the variation in the spacing of the weft cords,which hold the warp cords and constitute the wick. At the upperextremity or burning end of the wick, the wett cords are spacedrelatively close together, to produce a compact wick which will notrayout during its use, while at the lower and bifurcated end or' the wick,

which is immersed in oil, the weft spacing is approximately twice asgreat as at the upper end, making the lower end of the wick materiallylooser in weave. This construction facilitates and cheapens themanufacture and cost of making wicks due to the increased production anddecrease in amount of wett cords used.

Furthermore, a wick woven according to this design has an increasedoil-capillarity due to the looseness of the weave `throughout the majorportion of its length. This design makes it possible to give the upperend of the wick a stii weave, so that the burning end will hold itsshapey properly, and at the same time the lower end, which is immersedin the oil, is woven looser in order to increase the capillarity.

The invention will be understood if reference be made to theaccompanying drawing, in which- Figure l is a view showing the wick inelevation, and

Figure 2 is a sectional view taken on th line 2 2, Figurey l.

l is the entire wick, while 2 and 3 are, respectively, the upper portionand the lower loosely-woven portion.l The warp threads 4 and the weftthreads 5 are made of cotton or any suitable substance, and the weftthreads below the point marked 6, or other point of predeterminedaltitude, are spaced sufficiently to produce the desired looseness, 5the Quantity of oil which may be drawn by capillary action to the flamein a given time, being somewhatr dependent upon the openness of thesubmerged part of the wick. It has been lound that satisfactory resultsmay be attained if the lower weft threads are arranged twice as farapart as the upper weft threads.

The wick is tubular and may be made on Y a loom which is capableofproducing a tubular wick, the variation of wett cord spacing beingattained by varying the take-up mechanism of the loom in a manner wellknown to workers in the textile art.

A wick made as herein described, will not 00 fray out at its upper endwhich will be relatively stiii", even though the submerged portion is soloose as to be incapable of retaining a definite tubular form. Also,there is the advantage of cheap production due to 05 the lessening ofthe quantity of yarn required to produce a. wick, as well as to adecrease in the timev absorbedvin weaving. The wick is cleft at thelower end, so that it may straddle the vane which unites the concentrictubes of a central-draft burner.

Having thus described my invention, what I claim is:

A cylindrical woven wick including uniformly spaced warp threads, andweft threads, said wett threads in the lower part of the wick being morewidely spaced than the weft threads in the upper part of the wick.

In testimony whereof I aliix my signature.

FREDERICK w. sPANGLER.

